Description from Flora of China
Herbs annual. Stems erect or ascending, 20-30 cm tall, branched at base, glabrous. Petiole 4-5 mm; leaf blade ovate, 1-2.5 × 0.7-1.2 cm, both surfaces pubescent, base broadly cuneate, margin shortly ciliate, apex acute; ocrea tubular, 4-5 mm, membranous, hispidulous, apex truncate, shortly ciliate. Inflorescence terminal, spicate, lax, 1.5-3 cm; bracts funnel-shaped, 2-3 mm, apex obliquely truncate, each 2- or 3-flowered. Pedicel 6-9 mm, articulate at apex. Perianth pinkish, 5-parted; tepals elliptic, 4-5 mm, yellow-brown punctate. Stamens 8, included. Styles 3, connate to below middle; stigmas capitate. Achenes included in persistent perianth, brown, narrowly ovoid, trigonous, 4-4.5 mm, densely pitted. Fl. Jul-Oct, fr. Aug-Nov.
* Mountain streams, grassy slopes; 200-500 m. Hunan, Jiangxi, Zhejiang.